.about {
    background-color: white;
}
#multiple {
    width: 100%;
    -moz-box-sizing: border-box;
    -o-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
}
.Teacher-up{
    padding: 15px 30px;
}
::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background-color:#eaeaea;border-left:1px solid #ccc}::-webkit-scrollbar-thumb{background-color:#ccc}::-webkit-scrollbar-thumb:hover{background-color:#aaa}::scrollbar{width:5px}::scrollbar-track{background-color:#eaeaea;border-left:1px solid #ccc}::scrollbar-thumb{background-color:#ccc}::scrollbar-thumb:hover{background-color:#aaa}
.row-container {
    margin-right: auto;
    margin-left: auto;
    width: 100%;
}
.text-center {
    text-align: center!important;
}
.about-w3ls-info {
    margin: 0 auto;
}
.py-5 {
    padding-top: 3rem!important;
    padding-bottom: 3rem!important;
}
.about-w3ls-info>h3 {
    color: #333;
    font-size: 2.5em;
    font-weight: 600;
}
#img-thumb img {
    display: block;
    max-width: 100%;
    margin-top: 2em;
    margin-left: auto;
    margin-right: auto;
    border-radius: 5px;
    max-height: 175px;
}
.layui-table tr td{
    text-align: center;
    line-height: 36px;
}
.about-w3ls-info>p {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 25px;
    font-size: 16px;
    color: #777;
    line-height: 1.9em;
    letter-spacing: 1px;
    margin-top: 1rem!important;
    margin-bottom: 3rem!important;
}
.about-w3ls-info>a {
    cursor: pointer;
    color: #fff!important;
    background-color: #1E9FFF;
    border-color: #007bff;
    display: inline-block;
    padding: 10px 30px;
    font-size: 14px;
    letter-spacing: 1px;
    border-radius: 4px;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    box-shadow: 0 12px 60px rgba(0,0,0,.2);
    -webkit-box-shadow: 0 12px 60px rgba(0,0,0,.2);
    -o-box-shadow: 0 12px 60px rgba(0,0,0,.2);
    -moz-box-shadow: 0 12px 60px rgba(0,0,0,.2);
    -ms-box-shadow: 0 12px 60px rgba(0,0,0,.2);
    border: 2px solid transparent;
    transition: .5s all;
    -webkit-transition: .5s all;
    -moz-transition: .5s all;
    -o-transition: .5s all;
    -ms-transition: .5s all;
}
.rotateIn {
    -webkit-animation-name: rotateIn;
    animation-name: rotateIn;
}
html {
    height: 100%;
    max-height: 100%;
    font-size: 62.5%;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
#loading {
    background-color: rgba(0,0,0,0.8);
    height: 100%;
    width: 100%;
    position: fixed;
    z-index: 9999;
    margin-top: 0;
    top: 0;
}
#loading-center {
    width: 100%;
    height: 100%;
    position: relative;
}

#loading-center-absolute {
    position: absolute;
    left: 50%;
    top: 50%;
    height: 200px;
    width: 200px;
    margin-top: -100px;
    margin-left: -100px;
    -ms-transform: rotate(-135deg);
    -webkit-transform: rotate(-135deg);
    transform: rotate(-135deg);
}

.object {
    -moz-border-radius: 50% 50% 50% 50%;
    -webkit-border-radius: 50% 50% 50% 50%;
    border-radius: 50% 50% 50% 50%;
    position: absolute;
    border-top: 5px solid #FFF;
    border-bottom: 5px solid transparent;
    border-left: 5px solid #FFF;
    border-right: 5px solid transparent;
    -webkit-animation: animate 2s infinite;
    animation: animate 2s infinite;
}

#object_one {
    left: 75px;
    top: 75px;
    width: 50px;
    height: 50px;
}

#object_two {
    left: 65px;
    top: 65px;
    width: 70px;
    height: 70px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

#object_three {
    left: 55px;
    top: 55px;
    width: 90px;
    height: 90px;
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

#object_four {
    left: 45px;
    top: 45px;
    width: 110px;
    height: 110px;
    -webkit-animation-delay: 0.6s;
    animation-delay: 0.6s;
}

@-webkit-keyframes animate {
    50% {
        -ms-transform: rotate(360deg) scale(0.8);
        -webkit-transform: rotate(360deg) scale(0.8);
        transform: rotate(360deg) scale(0.8);
    }
}

@keyframes animate {
    50% {
        -ms-transform: rotate(360deg) scale(0.8);
        -webkit-transform: rotate(360deg) scale(0.8);
        transform: rotate(360deg) scale(0.8);
    }
}

.progress-bar {
    height: 4px;
    position: fixed;
    bottom: 0;
    z-index: 300;
    background: linear-gradient(to right,#00BCD4 0%,#2196F3 100%);
    opacity: .8;
}

.xf-footer {
    position: static;
    height: auto;
    padding: 15px 0;
    line-height: 30px;
    text-align: center;
}